Clamp-on radiation fin



Jan. 6, 1953 c. D! VINCENZO 2,624,555

CLAMP-ON RADIATION FIN Filed March 17, 1950 IN V EN TOR.

Patented Jan. 6, 1953 UNITED "STATES AT iETiNT OFFICE CLAMP-N RADIATIONFIN -Casey-Di Vincenzo, East Cleveland,. 0hio Application-March 17,1950, Serial No. 150,175

2 Claims. -(Cl. 257-26216) 'determined'bythe amountofradiati'on desiredor required. "My, inventionembodies anovel type of 'clamp on fin orfinunit of the last mentioned class and comprising a sectionalform of "finadapted to surround the tube with which'itisto be used, the sections"beingreadily separable to --enable "quick' attachment facility, andlocking provisions being made to prevent unauthorized displacement ofthefin-once it isin position on "the tube or-pipe.

-=A special feature of novelty of my newfin'lies in the-provisionofcertain'tube contacting'pro- --jections integrally struck from the finat the portions thereof most-adjacent tothetube 'for engaglng the latterto provide a relativelylarge amount -oftubeengaging- "area to afford a'high rate of heat conduction between-the tube and 'fin'underserviceconditions.

In the accompanying drawings-I-disclose a'preferred form of theinvention hereof, butdetails -ofthe--construction shown-may be modifiedin cross-sectiongand illustrating the clamp-on'fin,

.or: finunit of my invention arrangedin position ready: to be finallylocked in clamping -and in proper engaging relation to the saidtube.

.Eigure2is a viewsimilar toFigure Mont-showing the. fin. aswwhen finallyclamped and locked ontothe tube surrounding the same with the heatconduction lprojectionsflattened inproper conduction .relation to theperiphery of the tube.

Figure .3 is a .viewof oneof my-fins or -fi-n units with the parts.thereofin locked relation, preliminary to separation .to the positionsshown in Figure l, in which condition thefins may be packed or shippedand are ready foruse.

Figure 4 is a i view showing one of my fins mounted upon a heating orlike tube, theshowing being a View takenvabout on the linedi of Figure2,- looking. in the direction of the arrow, thetubebeing broken awayandshown partlyin sections.

Figure B is a fragmentary detail perspective 'view taken about on" the"line -5-=5 of Figure-*3 and"bringing"out 'a little more fully theconstruction of the struck out -heat conduction--projections' whichextend laterally --rrom' opposite sides of eachof the sections of thefin.

"Figure 6' isa 1 sectional -view*--ta-ken on-the-- line 6 6 orFigure '2and--bringing out-more clearly the 1pin and opening locking connection--between theconne cting andloclsing straps;- and; one ofthe fin sections.

"Figure 7 is a cross-sectional viewtaken about onthe-line L i-of Figure1 ;--bringi-ng out a little more clearly the feature whichis-illustrated in -Figure 6.

Similar reference characters refer to like parts throughoutthe followingdescriptionand in the accompanying drawings.

Describingspecifically" the "construction of my "fin' 'unit, of theclass hereinbefore referred to, it "is' notable that-"said unit iscomprised-preem- "plemental-plate sections l-and 2. These-sections aredisposed and held in thesame general "plane by means of, first,aconnecting strap 3--W-hich of the'connecting strap 3,--which--strapis-of-U- form-in -cross=section,--as seen best in Figure 4, with-thebridge portion between the sides of the strap-3 outermost'so that-ad-jacent edge-portions of thesections I and 2' may move inwardly'andoutwardly in relation --tothe 1 space between-the 'sides of the"member3.

cent cornerportions of the sections 1 -and 2-are thepoints-at-whichthe--pivota1 connections 4 "pass-through saidmembers rand-2.

The outermost adja- "NOW, i-n somewhat like -i'orm to connecting strap-tI employ another strapwhich-I call iconnectlng and locking strap 5,-also 'oi' ,U-I'orm in cross-section (see-Mgure' at and-Figures 6' and?The connecting andlocking strap 5 'is' pivoted at one end bythej'pivot'pin ca the adjacent outer corner portionor' the'plate-section I.

' The pivot I pins 4. and the pivot. pin Eai provide for permanent..pivotal connection betweenithe parts3,'5 and the platesections l and"2. -.At.the endof the connecting and locking strapifi oppositeithathaving the pivot pin connection'fia. with the plate I, said member 5 is.provided withra lofck piniB which extends transversely to the U-formation of the member 5 and is attached onthe inner surface of theside portion 5a ofisaid'member'fi. On the opposite side portion 5b ofthememb'er 5; and adjacent to the point of'mounting of the pin 6 ontheside-5a; there'isprovidedan-opening 50 in which the locking pin 6 iadapted to engage and interlock, after said pin passes through a slottedopening 20. in the outer corner portion of the plate 2, adjacent thefree end of the connecting and locking strap 5.

In the prehminary condition of the fin unit of my invention, as seen inFigures 1 and 7 primarily, one of the sides of the member 5, notably theside a is bent slightly outwardly or divergently from the side 5b at thend portion near the locking pin 6. The adjacent end portion of theplate 2 is adapted to be received between the sides 5a and 5b of themember 5 somewhat similarly to the manner in which the ends of theplates I and 2 are adapted to be received between the sides of theconnecting strap 3.

Each of the plate sections 1 and 2 of my device is formed with asemi-circular cut-out at its innermost edge portion, the two cut-outs ofthe members I and 2 being complemental and enabling the members I and 2to be engaged around the tube or pipe I with the cut-out edge portionsin close proximity to said pipe at the outer periphery or surfacethereof. The material of the plate members I and 2 at the curved cut-outportions thereof, above referred to, is formed with radial slits and thesections of the metal of each of the members I and 2 by reason of theprovision of said slits are bent alternately in opposite directionsafter the manner shown in Figures 1, 3 and 5, normally approximately atan obtuse angle to the plane of the plate section with which they areintegral. The said bent out portions which I designate 8 in the drawingsare adapted to be presented flatwise to the surface of the tube or pipe1, in applying the fin unit of the invention to said pipe or tube.Moreover, the said projections 8 are of considerable superficial area sothat they will, when pushed against the surface of the tube I, obtain aconsiderable amount of surface engagement with the tube enabling them toact as heat conduction projections in a self evident manner.

Now, with the foregoing understanding of the construction of my fin unitin mind, the method of assembling the same upon a tube such as thatdesignated 1 in the drawings, is as follows:

The plate sections 1 and 2 of the fin unit are first separated from thecondition in which they are illustrated in Figure 3 as the usualcondition of shipment and packing, so as to assume approximately theposition of Figure 1 though somewhat wider apart. The tube '1 is thusadapted to be received between the plate sections l and 2 bysufliciently separating same and thereafter by the employment of anysuitable clamping device, such as a screw clamp for instance, engagedwith the free outer edge portions of the members I and 2, the latter areforced towards each other in their common plane of the positionsthereof, thus bringing the cut-out inner edge portions toward theopposite outer wall portions of the tube 1. Continuing the movement ofthe members I and 2 together will first cause engagement of the outerextremities of the conduction projections 8 with the outer periphery ofthe tube and then when the inner edges of the members i and 2 finallysubstantially meet one another the projections 8 will have been bentfrom their angular positions of Figures 5, l and 3 to the positionsillustrated in Figure 2 in which said projections are disposedsubstantially at a right angle to the plane of the plate members I and2. When the parts of my fin unit are assembled to the extent of bringingthe plate memhers I and 2 together in the manner shown in Figure 2 andin Figure 4, the side surfaces of the pro ections 8 which are ad acentto the periphery of the tube 1 will be in full flat conductionengagement with the surface of the tube. At such time the connecting andlocking strap 5 of the fin unit may be shifted from the position inwhich it is shown in Figure 1 to the position in which it is shown inFigure 2 until the free end portion of the member 5 receives between itsside portions 5a and 5b the ad acent end portion of the plate 2. At suchtime the pin 6 Will be disposed in substantially the position of Figure7 and by using a pair of pliers or any suitable tool, the side portions5a and 50 may be brought together at the free end of the member 5 sothat the pin 6 will pass through the slotted opening 2a in the member 2and the opening 50 in the side 5b of said member 5. The foregoingrepresents the condition of the pin unit when it has been finally Illllyunited upon and locked to the tube 7, the interlocking relations of theparts in, 2 and 5b, in regard to the action of the locking pin 6 beingfully disclosed by the sectional view of Figure 6 of the drawings.

It will be understood, or course, that the number of the pin units Ithat may be applied to a tube 7 of predetermined length will depend uponthe amount of extended heat desired to be radiated from the tube 1. Inlike manner, the above matter will be controlled to a certain extentbythe size of the fin units employed, according to Well known principlesof heat radiation and absorption.

my invention comprises a relatively simple construction of fin unit forthe purposes thereof, one which is particularly advantageous in that itmay be very quickly applied to a tube or pipe, and should occasionarise, detached therefrom, and one which by proper manipulation in theapplication thereof to the tube will establish a very desirable heatconduction connection between the body of the fin or fin unit and saidtube.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A lin unit for tube radiation purposes, comprising normally connectedcomplemental plate sections of relatively large area disposed in thesame plane to form a plate-like nn body and having ad acent cut-out edgeportions to fit against opposite portions of a tube to which the unitmay be applied, said sections being formed with lateral conductionprojections olfstanding from the cut-out edge portions and adapted tolie against the side portions of a tube on moving the plate sectionstogether, a connecting strap pivotally connected at its opposite ends tothe plate sections at corresponding adjacent ends thereof to normallyconnect the sections together, and locking means to lock together theopposite corresponding ends of the said sections comprising a connectingstrap pivotally attached to one of the sections and having interlockingconnection with the other of the sections.

2. A fin unit for tube radiation purposes, comprising normally connectedcomplemental plate sections of relatively large area disposed in thesame plane to form a plate-like fin body and having adjacent cut-outedge portions to fit against opposite portions of a tube, said sectionsbeing formed with lateral conduction projections ofistanding from thecut-out edge portions for close engagement with a tube on moving theplate sections together, and means to hold the sections together andmaintaining the projections flat against a tube to which the fin unit isapplied comprising a connecting strap pivotally connecting the platesections at corresponding ends thereof, and a strap pivoted to one platesection 5 and having a pin lock connection with the other plate section,said last mentioned strap being disposed at the other corresponding endsof the plate section, each of said above mentioned straps having a bodyof U-form in cross section to receive 10 therein the adjacent edges ofthe plate sections.

CASEY DI VINCENZO.

REFERENCES CITED The following references are of record in the 15 fileof this patent:

6 UNITED STATES PATENTS Number Number Name Date Parker Aug. 26, 1890Kane Sept. 7, 1909 Todd July 3, 1923 Trane Sept. 16, 1930 Franquet et a1Nov. 18, 1930 Kleucker Mar. 1, 1932 Ruthenburg et a1. Jan. 16, 1934Kettering Feb. 27, 1934 Cobb Aug, 10, 1937 Berg et a1 June 20, 1939FOREIGN PATENTS Country Date Switzerland Nov. 1, 1934

